CVE-2026-86876

🔶 medium

Summary

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, visionOS 27, watchOS 27. A sandboxed process may be able to circumvent sandbox restrictions.

CVSS Score

5.2

Medium

EPSS Score

0.1

Exploit Probability

Published Date

2026-09-14

First Seen: 2026-09-16

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 19.0% of all 358,566 vulnerabilities in our database.

#290,296

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Sep 14, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-09-15

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CWE IDs (Weakness Types)

CWE-787

📦 Affected Products 6

Vendor	Product	Status	Affected Versions
apple	iphone_os	Affected	< 26.7
apple	watchos	Affected	< 27.0
apple	ipados	Affected	< 26.7
apple	macos	Affected	> 15.0 < 15.8
apple	macos	Affected	> 26.0 < 26.7
apple	visionos	Affected	< 27.0

🔗 References 7

https://support.apple.com/en-us/149034

Release Notes Vendor Advisory

https://support.apple.com/en-us/149035

Release Notes Vendor Advisory

https://support.apple.com/en-us/149037

Release Notes Vendor Advisory

https://support.apple.com/en-us/149038

Release Notes Vendor Advisory

https://support.apple.com/en-us/149041

Release Notes Vendor Advisory

https://support.apple.com/en-us/149042

Release Notes Vendor Advisory

https://support.apple.com/en-us/149043

Release Notes Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-28960	⚠️ high	7.5	0.4	A denial-of-service issue was addressed with improved validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10....	2026-09-14
CVE-2026-43664	🔶 medium	5.5	0.2	This issue was addressed with improved data protection. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPad...	2026-09-14
CVE-2026-43684	⚠️ high	7.8	0.2	A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, m...	2026-09-14
CVE-2026-43686	⚠️ high	8.8	0.4	A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, i...	2026-09-14
CVE-2026-43687	🔶 medium	6.5	0.4	The issue was addressed with improved memory handling. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadO...	2026-09-14
CVE-2026-43689	⚠️ high	7.8	0.2	A permissions issue was addressed with additional restrictions. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 ...	2026-09-14

These CVEs affect the same products